I've driven the CXC model many times and you're right, the pedals and steering don't move..(wheel is a VPP force feedback wheel so it has feeling) but.. You quickly forget about that.. The simulator definitely tricks your mind and you quickly forget that it's all not moving as one. I personally love the experience ! Takes sim racing to a whole new level..
BTW, that was rFactor he was driving.. I've driven LFS in it as well
In regards to seat vibrating, and you hear it in the throttle.. Thats because Alex isn't that tall and his throttle foot wasn't planted on the base of the simulator. With some adjusting, that would go away.
Wait till you see me driving it in the full segment we're releasing this weekend.
Also we have another pro driver Derek Hill, son of racing legend Phil Hill at the wheel.. It didn't do that for him.. He is over 6' tall.
The Force Dynamics model looks cool, but, don't eat before running in it. hehe.. I also heard you need to bolt the Force Dynamics to your foundation. CXC, is plug and play. (I've never tried the FD system)